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Finding the Fourth Proportional to 69,305.12, 103,980 and 22,590.08

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Solution

The fourth proportional to 69,305.12, 103,980 and 22,590.08 is: 33,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,305.12 : 103,980 = 22,590.08 : x
  2. Step 2: Convert to fraction form
    69,305.12/103,980 = 22,590.08/x
  3. Step 3: Cross multiply
    69,305.12x = 103,980 × 22,590.08
  4. Step 4: Simplify right side
    69,305.12x = 2,348,916,518.40
  5. Step 5: Solve for x
    x = 2,348,916,518.40/69,305.12
  6. Step 6: Final answer
    x = 33,892.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.